Question

-х-(-7)= -9 -х-(-7)= 2

Answer 1

1) -х-(-7)=-9
-х+7=-9
-х=-9-7
-х=-16
х=16
2) -х-(-7)=2
-х+7=2
-х=2-7
-х=-5
х=5

Answer 2

-x+7=-9 X=7+9 X=16 -x+7=2 X=7-2 X=5